Subjects: CHI-squared test; CONFIDENCE intervals; STATISTICAL correlationUNITED States
Record details
Subjects: INFERTILITY treatment; PREMATURE infants; MULTIPLE birthPUERTO Rico; WASHINGTON (D.C.); UNITED StatesCENTERS for Disease Control & Prevention (U.S.)
Subjects: INFERTILITY treatment; ETHNIC groups; FERTILIZATION in vitroUNITED States
Subjects: INFERTILITY treatment; EDUCATIONAL attainment; CHRONIC diseasesUNITED StatesCENTERS for Disease Control & Prevention (U.S.)
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